Astronaut Steve Robinson (left) floats through the Zvezda module of the International Space Station as fellow Mission Specialist Wendy Lawrence looks through a window at the Earth below. (Image credit: NASA)

Bill Parsons, left, manager of the Space Shuttle Program, talks about Discovery's current mission with William Readdy, associate administrator for the Office of Spaceflight, NASA Headquarters, Washington, D.C., during the Aug. 4 session of the Mission Management Team in Houston. The team discussed the potential of a fourth spacewalk for the mission and decided in the end to forego it, feeling the Shuttle is safe to return to Earth. The team meets daily in Houston during the mission. (Image Credit: NASA)

A well-equipped conference room provides support for the important discussions in the Mission Management Team meetings. In this meeting, the team was discussing the possibility of a fourth spacewalk. In the end, the team decided to forego it.
(Image Credit: NASA)

John Muratore, manager of the Space Shuttle Systems Engineering and Integration Office, discusses a key STS-114 issue during the Mission Management Team session on the afternoon of August 4. The team meets daily in Houston during the mission. (Image Credit: NASA)